Device for printing on hollow bodies

Abstract

A device for printing on hollow bodies has a plurality of printing units each having a printing cylinder. At least one of the printing units has an inking unit having a chambered doctor blade that provides printing ink. The chambered doctor blade system has at least one ink pan and a doctor blade holder in a single assembly. The single assembly of the chambered doctor blade system is retained in the inking unit only on one side. The assembly of the chambered doctor blade system forms a cantilever arm on a side frame of the inking unit. The assembly of the chambered doctor blade system can be moved axially parallel to the anilox roller and can be removed from the inking unit by that movement.

The invention claimed is: 
     
       1. A device for printing on hollow bodies, comprising:
 a plurality of printing units, each having a printing forme cylinder and wherein at least one of these printing units has an inking unit including an anilox roller, and has a chamber doctor blade system which supplies ink; 
 at least one ink trough and one doctor blade bar in a single structural unit in the chamber doctor blade system, wherein the single structural unit is held on only one side in the inking unit, wherein the single structural unit forms a cantilever arm on a side frame of the inking unit, and wherein the single structural unit is movable axially parallel to the anilox roller and can be removed from the inking unit by this movement; 
 a plate changer on the at least one of the printing units and assigned to the printing forme cylinder of the at least one of the printing units, wherein a printing forme which is intended for the printing forme cylinder one of is and can be supplied to the plate changer from a side of the at least one of the printing units and which plate changer lies diametrically opposite the one side that holds the single structural unit of the chamber doctor blade system. 
 
     
     
       2. The device according to  claim 1 , characterized in that the anilox roller receives ink from the chamber doctor blade system and wherein the one doctor blade bar of the chamber doctor blade system one of is and can be placed axially parallel onto the anilox roller. 
     
     
       3. The device according to  claim 2 , characterized in that the anilox roller has a temperature control device for controlling a temperature of a lateral surface of the anilox roller. 
     
     
       4. The device according to  claim 1 , characterized in that an ink forme roller is provided, which ink forme roller one of is and can be thrown onto the printing forme cylinder of the printing unit. 
     
     
       5. The device according to  claim 4 , characterized in that in an area downstream of the chamber doctor blade system, in a direction of rotation of the anilox roller, and between the chamber doctor blade system and the ink forme roller, a rider roller one of is and can be thrown onto the anilox roller. 
     
     
       6. The device according to  claim 4 , characterized in that the inking unit has a two-roller roller train, consisting of the ink forme roller and the anilox roller, for the transport of ink from the chamber doctor blade system to the printing forme cylinder. 
     
     
       7. The device according to  claim 4 , characterized in that the ink forme roller is rotationally driven by the anilox roller by of friction. 
     
     
       8. The device according to  claim 4 , characterized in that an outer diameter of the anilox roller is greater than an outer diameter of the ink forme roller. 
     
     
       9. The device according to  claim 1 , characterized in that the chamber doctor blade system has in the single structural unit a pump for conveying ink. 
     
     
       10. The device according to  claim 1 , characterized in that a mount of the printing forme cylinder is embodied as a cantilevered mount, and wherein the printing forme cylinder is mounted at an end face on a journal. 
     
     
       11. The device according to  claim 1 , characterized in that the plate changer has a bearing surface for a printing forme to be changed, wherein the bearing surface has two different operating positions, wherein in a first operating position the bearing surface is located laterally next to the printing unit on the printing forme cylinder, and wherein in a second operating position the bearing surface is located in front of, and along the printing forme cylinder. 
     
     
       12. The device according to  claim 11 , characterized in that the bearing surface of the plate changer is movable linearly along a rotational axis of the printing forme cylinder. 
     
     
       13. The device according to  claim 1 , characterized in that the printing forme which is intended for the printing forme cylinder can be automatically replaced by use of the plate changer. 
     
     
       14. The device according to  claim 1 , characterized in that the hollow body is printed in one of a letterpress process, a screen printing process and an offset printing process.